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钢板-混凝土组合桥面板静力与疲劳性能试验

, PP. 78-83

Keywords: 桥梁工程,钢板-混凝土组合桥面板,试验研究,静力性能,疲劳性能

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Abstract:

?为了研究钢板-混凝土组合桥面板在静力及疲劳荷载下的受力性能,对8块钢板-混凝土组合桥面板试件进行了静力加载试验,并对6块组合桥面板试件进行了等幅疲劳试验,着重研究了组合桥面板中开孔钢板连接件孔中横向贯通钢筋布置及名义加载剪跨比2个因素对组合桥面板静载下受力行为的影响,同时分析了疲劳荷载下组合桥面板中开孔钢板布置形式、疲劳荷载幅值和疲劳加载循环次数对组合桥面板疲劳刚度和疲劳强度的影响。结果表明:组合桥面板均表现为典型的弯曲破坏,且具有较高的受弯承载能力和刚度;组合桥面板疲劳破坏形态均为底部钢板疲劳断裂破坏,其疲劳强度由底部钢板疲劳应力幅值确定。

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